The marked words in this word ladder are the punch line to the joke below:

Bartender: You've been spending a lot of time in here lately. Is everything all right at home? / Monty: Well, it's too hard to be there since my wife has started using four-letter words. / Bartender: My goodness! What does she say? / Monty: [Rung 01][Rung 06][Rung 10][Rung 14]